I am 5 months pregnant and my dog just gave birth to a litter a couple days ago. We just found out that she just got fleas and now is going on puppies as well. What can I give her to get rid of them. And also will it cause any harm to me? Just a question

You don't give the mom dog anything, you get rid of the fleas on the pups and her too. Disinfect the area where they sleep, etc. I washed my orphan pup (now ll years old) at five weeks, as soon as I brought her home. I used baby shampoo at the time.

No, no harm will come to you because there are fleas.